The number of onto functions from {1,2,3,4,5} to {1,2}
Answer & explanation
Correct answer: option 2
The number of onto functions from a set A with m elements and a set B with 2 elements is $2^m-2$
The number of onto functions from {1,2,3,4,5} to {1,2}
Correct answer: option 2
The number of onto functions from a set A with m elements and a set B with 2 elements is $2^m-2$